[google|compute] Change projects we search for images in.

This removes Google (which has no valid v1 images) and adds rhel-cloud
and suse-cloud. It also wraps the lookups in a catch block for not-found
exceptions because not everyone has access to everything.

lib/fog/google/examples/image_all.rb

@@ -0,0 +1,6 @@
+def test
+  connection = Fog::Compute.new({ :provider => "Google" })
+
+  # If this doesn't raise an exception, everything is good.
+  connection.images.all
+end

lib/fog/google/models/compute/images.rb

@@ -9,23 +9,32 @@ module Fog
 
         model Fog::Compute::Google::Image
 
-        GLOBAL_PROJECTS = [ 'google',
-                            'debian-cloud',
-                            'centos-cloud',
-                          # RHEL removed from this list because not everyone has access to it.
-                          #  'rhel-cloud',
-                          ]
+        # NOTE: Not everyone has access to these projects because of the
+        # licenses needed to use some of them.
+        # https://developers.google.com/compute/docs/premium-operating-systems
+        GLOBAL_PROJECTS = [
+          'debian-cloud',
+          'centos-cloud',
+          'rhel-cloud',
+          'suse-cloud'
+        ]
 
         def all
           data = []
           all_projects = GLOBAL_PROJECTS + [ self.service.project ]
 
           all_projects.each do |project|
-            images = service.list_images(project).body["items"] || []
+            begin
+              images = service.list_images(project).body["items"] || []
 
-            # Keep track of the project in which we found the image(s)
-            images.each { |img| img[:project] = project }
-            data += images
+              # Keep track of the project in which we found the image(s)
+              images.each { |img| img[:project] = project }
+              data += images
+            rescue Fog::Errors::NotFound
+              # Not everyone has access to every Global Project. Requests
+              # return 404 if you don't have access.
+              next
+            end
           end
 
           load(data)